Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Patent
1990-05-18
1992-02-11
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
156 731, 1565801, 4251742, 264 23, B32B 3100
Patent
active
050873202
ABSTRACT:
An ultrasonic rotary horn for continuously bonding together two or more layers of thermoplastic materials such as woven and nonwoven fabrics and films. The horn is adapted to resonate in a manner such that: 1) the excited end moves substantially in phase with the movement of the source of excitation; 2) the opposing end, whether or not it is actively excited, moves substantially out of phase with the movement of the excited end; 3) the radial work-contacting surface of the horn also moves substantially out of phase with the movement of the excited end; and 4) the horn exhibits a single nodal point at its geometric center. The horn has a concave configuration which comprises a central, circular flat portion which is concentric with the rotational axis and a convex portion between the flat portion and the radial surface. The convex portion is a curved surface having axial symmetry and a curvilinear profile in cross-section through the rotational axis.
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G. W. McMahon, J. Acoust. Soc. Am., 36, 85 (1964).
Kimberly-Clark Corporation
Maycock William E.
Sells J.
Simmons David A.
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